Mechanisms of Cognitive Change: Training Improves the Quality But Not the Quantity of Visual Working Memory Representations.
Mechanisms of Cognitive Change: Training Improves the Quality But Not the Quantity of Visual Working Memory Representations.
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DOI：
10.5334/joc.306
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发表时间：
2023
影响因子：
--
通讯作者：
von Bastian CC
中科院分区：
文献类型：
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作者：
Jiang S;Jones M;von Bastian CC
到目前为止，视觉工作记忆（WM）训练未能在未经训练的任务中产生一致的认知效益，尽管在训练任务中有很大的改善。调查潜在的培训效果的机制可以帮助解释这些不一致。在这个预先注册，前测试/后测试的在线培训研究中，我们研究了培训如何影响视觉工作记忆中使用连续再现任务的表征的数量和质量。将64名健康青年随机分为实验组和对照组，分别进行4次定向再现和视觉搜索训练。我们观察到，在训练任务中，只有质量，而不是数量，在实验组相对于控制组的视觉工作记忆表征显着增加。这些改进并没有推广到未经训练的刺激或范式。因此，我们的研究结果表明，培训收益并不是由增强的能力驱动的。相反，收益的质量视觉工作记忆的代表，是绑在特定的刺激和范式可能反映了提高效率，在使用现有的视觉工作记忆的能力。
As of yet, visual working memory (WM) training has failed to yield consistent cognitive benefits to performance in untrained tasks, despite large improvements in trained tasks. Investigating the mechanisms underlying training effects can help explain these inconsistencies. In this pre-registered, pre-test/post-test online training study, we examined how training affects the quantity and quality of representations in visual WM using continuous-reproduction tasks. N = 64 young healthy adults were randomly assigned to an experimental group or an active control group to complete four training sessions of practce in an orientation-reproduction or a visual search task, respectively. We observed that, in the trained task, only the quality, but not the quantity, of visual WM representations significantly increased in the experimental group relative to the control group. These improvements did not generalise to untrained stimuli or paradigms. Therefore, our findings suggest that training gains are not driven by enhanced capacity. Instead, gains in the quality of visual WM representations that are tied to specific stimuli and paradigms may reflect enhanced efficiency in using the existing visual WM capacity.